Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-17-2013, 05:49 PM
Registered User
 
Join Date: Apr 2011
Location: SF, CA, USA
Posts: 928
does catch can protect against runaway?

trying out no catch can. hooking the PCV gas straight into the turbo intake will presumably get the compressor and manifold oily, but i dunno if passing through a baffle first would make much difference. all else equal, i like not having the can present.

more to the point, will i be risking a runaway engine by adding combustible oil to the air intake?

the stock air filter (85 CA) did pretty much exactly this except that i guess some of the oil solids stayed on the filter.
__________________
'77 240D, 504H, OM617.952, etc.
Reply With Quote
  #2  
Old 10-17-2013, 05:53 PM
Banned
 
Join Date: Aug 2008
Location: Texafornia
Posts: 5,493
No.
runaway on these benz's are caused by the little wire link being-or becoming unattached to the shutdown solenoid on the IP.
Reply With Quote
  #3  
Old 10-17-2013, 06:33 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,179
It takes full oil pressure dumping into the Turbo funnel to motor to cause a runaway unless your rings are GONE.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #4  
Old 10-18-2013, 02:27 AM
Registered User
 
Join Date: Apr 2011
Location: SF, CA, USA
Posts: 928
thanks guys. maybe even a little extra fuel, hehe.
__________________
'77 240D, 504H, OM617.952, etc.
Reply With Quote
  #5  
Old 10-18-2013, 02:35 AM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Quote:
Originally Posted by panZZer View Post
No.
runaway on these benz's are caused by the little wire link being-or becoming unattached to the shutdown solenoid on the IP.



OM616 or OM617 don`t have a shutdown solenoid. what vehicle are you thinking of?


Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

http://i30.photobucket.com/albums/c3...ilys/boobs.gif


Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
Reply With Quote
  #6  
Old 10-18-2013, 09:36 AM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,179
Quote:
Originally Posted by panZZer View Post
No.
runaway on these benz's are caused by the little wire link being-or becoming unattached to the shutdown solenoid on the IP.
well... technically, it's a shutdown actuator... since it's powered by vacuum, not electricity... but that would not cause a true "runaway" because the IP rack limiter would prevent overspeed, and turning off the fuel supply, by cutting the fuel line would shut down the car.

a TRUE diesel runaway, is not caused by the fuel system at all... it's caused by engine oil, or other uncontrollable fuel source finding it's way into the intake or cylinders...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #7  
Old 10-18-2013, 10:14 AM
Registered User
 
Join Date: Jan 2002
Posts: 18,353
The PCV system in the early 116 617's fed directly into the U-tube in front of the turbo.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #8  
Old 10-18-2013, 10:17 AM
winmutt's Avatar
85 300D 4spd+tow+h4
 
Join Date: Apr 2006
Location: Atl Gawga
Posts: 9,325
And in the 60x's it feed direct into intake as well.
__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1987 300D Sturmmachine
1991 300D Nearly Perfect
1994 E320 Cabriolet
1995 E320 Touring
2001 Eurovan FOR SALE
1985 300D car, sold and missed.
OBK #42
Reply With Quote
  #9  
Old 10-18-2013, 10:53 AM
300D-91's Avatar
Das German Diesel Mann
 
Join Date: Sep 2010
Location: Eastern PA
Posts: 285
Quote:
Originally Posted by bricktron View Post
trying out no catch can. hooking the PCV gas straight into the turbo intake will presumably get the compressor and manifold oily, but i dunno if passing through a baffle first would make much difference. all else equal, i like not having the can present.

more to the point, will i be risking a runaway engine by adding combustible oil to the air intake?

the stock air filter (85 CA) did pretty much exactly this except that i guess some of the oil solids stayed on the filter.
On my 91 (OM602) the valve cover is vented between the air cleaner and turbo from the factory. I went down the oil catch can path in an attempt to keep oil out of the turbo / intake - in the end I removed the can and returned everything to stock.

You can see photos and read about my results at my Benz-Site.
__________________
This car had a history, now it has a future.

Learn more about my Benz here.
Reply With Quote
  #10  
Old 10-18-2013, 11:00 PM
Registered User
 
Join Date: Apr 2011
Location: SF, CA, USA
Posts: 928
very nice, all. i wonder why the company decided to move the PCV from the intake hose "backwards" to the air filter, i guess during the W116 era. if the simpler setup does work well, that's what i'll do.
__________________
'77 240D, 504H, OM617.952, etc.
Reply With Quote
  #11  
Old 10-18-2013, 11:22 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,179
I"m sure it was in an effort to reduce GUNK building up in the intake from oil mixing with the EGR...

I guess they gave up on the 60x motors...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 06:55 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page